US3845258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic-electric switch apparatus with lock-out feature
Assignee: Individual
•
Filing: 1973-05-11
•
Granted: 1974-10-29
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Expires: 1993-05-11
Abstract
Abstract An apparatus comprising a plurality of electric switches, pneumatic actuators for the switches, means for preventing inadvertent actuation of one or more switches and means for supporting the previous elements in coactive relation.
Inventors
- 👤 J Bruels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:53
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/72; H01H3/00; H01H3/22; H01H3/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
197 words
In a fluid pressure actuated electrical switching apparatus: A. a switch having: i. a mounting support; and ii. an elongated resilient arm for actuation of said switch; B. an expandible fluid pressure actuator operable to displace said arm to thereby actuate said switch; C. said actuator including: i. a cylindrical base section having a portion of reduced diameter intermediate the ends thereof; D. a support for said actuator including: i. a base support plate; ii. horizontally spaced upstanding walls on said base support plate defining therebetween a vertical slot having a width less than the diameter of said cylindrical base section of said actuator and greater than that of said reduced diameter portion; E. said reduced diameter portion of said actuator being engaged in said vertical slot and mounting and supporting said actuator in operable juxtaposition to said arm for actuation therethrough of said mounted switch upon operation of said actuator; and F. stop means having selective active and inactive positions mounted adjacent said arm and operable upon movement to one or the other of said positions to selectively permit or prevent displacement of said arm by said actuator and thereby selectively control operation of said switch.
Claim 2
Dependent Claim
197 words
In a fluid pressure actuated electrical switching apparatus: A. a switch having: i. a mounting support; and ii. an elongated resilient arm for actuation of said switch; B. an expandible fluid pressure actuator operable to displace said arm to thereby actuate said switch; C. said actuator including: i. a cylindrical base section having a portion of reduced diameter intermediate the ends thereof; D. a support for said actuator including: i. a base support plate; ii. horizontally spaced upstanding walls on said base support plate defining therebetween a vertical slot having a width less than the diameter of said cylindrical base section of said actuator and greater than that of said reduced diameter portion; E. said reduced diameter portion of said actuator being engaged in said vertical slot and mounting and supporting said actuator in operable juxtaposition to said arm for actuation therethrough of said mounted switch upon operation of said actuator; and F. stop means having selective active and inactive positions mounted adjacent said arm and operable upon movement to one or the other of said positions to selectively permit or prevent displacement of said arm by said actuator and thereby selectively control operation of said switch.
Claim 3
Dependent Claim
75 words
Apparatus as claimed in claim 1, said stop means including: i. a rotatably mounted vertical shaft positioned proximate said arm; ii. a longitudinal radial extension on said shaft; iii. mounting means for said shaft permitting rotation thereof between a first position in which said radial extension engages said arm and prevents displacement thereof, and a second rotated non-engaging position with respect to said arm wherein said arm is free to move and actuate said switch.
Claim 4
Dependent Claim
97 words
Apparatus as claimed in claim 2, said mounting means for said shaft including: i. a base having a bore and angularly displaced detent slots therein; ii. said shaft being rotatably and vertically displaceably mounted in said bore; iii. a portion of said radial extension on said shaft being selectively engageable in one or the other of said detent slots upon vertical upward displacement of said shaft, rotation, and downward release thereof, said radial extension when in one said detent slot engaging said arm, and in the other said detent slot freeing said arm for switch actuating movement.
Claim 5
Dependent Claim
31 words
Apparatus as claimed in claim 3, including resilient means engaging said shaft having said radial extension and resiliently biasing said radial extension into one or the other of said detent slots.
Claim 6
Dependent Claim
46 words
Apparatus as claimed in claim 4, wherein a plurality of said switches and said actuators are vertically juxtaposedly mounted, and said resilieNt means resiliently engage the tops of the uppermost switch and said radial extension for maintaining spatial positionment of said switches and said stop means.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |